CartnerDepartment of Technology and Department of Chemistry, University of Waikato, Private Bag 3105, Hamilton, New ZealandOn leave at Max-Planck Institute for Metals Research, Institute for Materials Science, Heisenbergstraße 5, 70569 Stuttgart, Germanyby R.G. ClarkLaGdO3 is prepared via a reverse-strike coprecipitation method and sintered at temperatures of 1350–1450°C for 6h. Raman spectroscopy of the sintered materials revealed profiles similar to that observed for pure B-type Gd2O3. Low temperature (−196°C) Raman spectra showed a total of 18 bands of a possible 21 allowed modes predicted for the monoclinic B-type mixed rare earth oxide with C2/m space group. These bands were assigned to modes in comparison to the band assignments for Gd2O3 as follows; 71 (Bg), 82 (Ag), 98 (Bg), 109 (Ag), 124 (Ag), 158 (Ag), 182 (Ag), 219 (Ag), 242 (Ag), 279 (Ag), 315 (Bg), 366 (Ag), 390 (Bg), 419 [Bg+(Ag?)], 436 (Ag), 458 (Ag), 560 (Ag) and 575 (Ag)cm−1.Powder X-ray diffraction patterns revealed a monoclinic pattern for materials sintered at all three temperatures; 1350, 1400 and 1450°C.
LaGdO 3 is prepared via a reverse-strike coprecipitation method and sintered at temperatures of 1350-1450 o C for 6h. Raman spectroscopy of the sintered materials revealed profiles similar to that observed for pure B-type Gd 2 O 3 . Low temperature (-196 o C) Raman spectra showed a total of 18 bands of a possible 21 allowed modes predicted for the monoclinic...